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astro-ph2000
The emission nebula associated with V1974 Cyg: a unique object?
R. Casalegno, M. Orio, J. Mathis +6
Through a program of narrow band imaging, we have observed the changing structure of the H alpha emission line around Nova Cyg 1992 (V1974 Cyg) at regular intervals from 1996 to 19…
astro-ph1998
The Extreme Outer Regions of Disk Galaxies: Star Formation and Metal Abundances
A. M. N. Ferguson, R. F. G. Wyse, J. S. Gallagher
The extreme outer regions of disk galaxies, lying at or beyond the classical optical radius defined by R25, present an opportunity to study star formation and chemical evolution un…